Adhesion of aluminium alloys: morphology, surface chemistry and adhesive bond durability

  • Vaslier, L. (Unite de Recherche en Chimie Organique et Macromoleculaire (URCOM), Universite du Havre) ;
  • Moutarlier, V. (Institut Technologique des Sciences de Franche-Comte (ITSFC), Universite de Besancon) ;
  • Gigandet, M.P. (Institut Technologique des Sciences de Franche-Comte (ITSFC), Universite de Besancon) ;
  • Grisel, M. (Unite de Recherche en Chimie Organique et Macromoleculaire (URCOM), Universite du Havre)
  • Published : 2006.10.13

Abstract

Chromic acid anodizing of aluminium is an effective process for producing a substrate which provides excellent surface properties to assembly. However, new chromium-free finishing metal treatments are being developed to reach new environmental goals. Present study deals with chromium free experimental conditions for both deoxidizing and anodizing treatments. Results clearly demonstrate the potentiality for environmentally friendly treatments to get suitable metal-adhesive performance. In particular, the role of both metal surface porosity and chemical composition has been highlighted thus allowing to propose alternative to classical treatments for aeronautic applications.

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